#VU105461 Resource exhaustion in oauth2 - CVE-2025-22868

Vulnerability identifier: #VU105461

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-22868

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
oauth2
Universal components / Libraries / Programming Languages & Components

Vendor: Google

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the jws package does not properly control consumption of internal resources when handling malformed tokens. A remote attacker can pass a malformed JWT token to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

oauth2: 0.1.0 - 0.26.0

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External links
https://go.dev/cl/652155
https://go.dev/issue/71490
https://pkg.go.dev/vuln/GO-2025-3488

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.